<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
</head>

<style type="text/css">
		.dyq{
			background-color: white;
			color: blue;
			width:100px;
			height: 100px;


			border:10px solid red;

			padding:20px;
			margin: 20px;
		}
</style>
<body>
	<div class="dyq">
		我是DYQ
	</div>
</body>

</html>